Property, Plant and Equipment (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Oil and natural gas properties
Proved	$ 1,493,956	$ 1,454,016
Unproved	11,553	12,255
Total oil and natural gas properties	1,505,509	1,466,271
Less: accumulated depreciation, depletion and impairment	(1,377,639)	(1,373,217)
Net oil and natural gas properties	127,870	93,054
Property, Plant and Equipment, net
Financing leases	1,497	1,384
Total	128,757	128,581
Less: accumulated depreciation and amortization	(35,066)	(30,790)
Other property, plant and equipment, net	93,691	97,791
Total property, plant and equipment, net	221,561	190,845
Land
Property, Plant and Equipment, net
Property, plant and equipment, gross	200	200
Electrical infrastructure
Property, Plant and Equipment, net
Property, plant and equipment, gross	121,819	121,819
Other non-oil and natural gas equipment
Property, Plant and Equipment, net
Property, plant and equipment, gross	1,638	1,575
Building and structures
Property, Plant and Equipment, net
Property, plant and equipment, gross	$ 3,603	$ 3,603

Amount of accumulated depreciation, depletion, amortization and valuation allowance relating to oil and gas producing activities.

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The sum of the capitalized costs incurred, as of the balance sheet date, of unproved properties excluded from amortization including acquisition costs, exploration costs, development costs, and production costs.

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Capitalized costs of proved properties incurred for any combination mineral interests acquisitions; wells and related equipment; support equipment and facilities; and uncompleted wells and equipment and other costs not previously disclosed within this table.

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Amount, before accumulated amortization, of right-of-use asset from finance lease.

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Oil and gas properties, gross, carried under the full cost method.

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Amount of accumulated depreciation and amortization from plant, property, and equipment and right-of-use asset from finance lease.

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Amount, after accumulated depreciation and amortization, of property, plant, and equipment and finance lease right-of-use asset.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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